Hi Alfonso, welcome to the forums.
I suggest making a plain object, then adding another plain to it as a second limb, then flip that, and texture it with a back texture. So you'd have all the card faces as images, then just 1 back texture, like the back of a playing card maybe.
Anyway, here's a little example of what I'm talking about:
sync on
sync rate 0
`Make a 2 sided plain object for cloning
make object plain 1,1.0,1.0
make mesh from object 1,1
add limb 1,1,1
rotate limb 1,1,0,0,180
set object cull 1,1
scale object texture 1,-1.0,1.0
hide object 1
`Make test textures
ink rgb(255,255,255),0
box 0,0,128,86,rgb(255,0,0),rgb(255,0,128),rgb(255,0,0),rgb(255,0,128)
text 0,0,"Back"
get image 1,0,0,128,86,1
box 0,0,128,86,rgb(0,255,0),rgb(0,255,0),rgb(0,255,0),rgb(0,255,0)
text 0,0,"Front"
get image 2,0,0,128,86,1
cls
`make_object_card(obj,xsize#,ysize#,imgback,imgfront)
make_object_card(10,128,86,1,2)
`main loop
do
rotate object 10,mousey(),mousex(),0.0
sync
loop
function make_object_card(obj,xsize#,ysize#,imgb,imgf)
clone object obj,1
texture object obj,imgb : texture limb obj,1,imgf
scale object obj,xsize#,ysize#,0.0
show object obj
endfunction

Health, Ammo, and bacon and eggs!
